Supco SPP6E E Series Electronic Potential Relay Style Hard Start Kit, 1/2 - 3 HP Range

The Supco SPP E series electronic potential relay style hard start kit features a two-wire installation connection for starting motors. This electronic relay meets Original Equipment Manufacturer (OEM) requirements, making it suitable for multiple applications. Equipped with an instant re-start feature and voltage-sensing capability, the relay also has a back-up electronic timing circuit to protect the compressor. This hard start electronic potential relay is Underwriter's Laboratories (UL) recognized and North American Technician Excellence (NATE) certified, making it suitable for use in heating, air conditioning, and refrigeration applications.

Relay switches, also known as electrical relays or electrical relay switches, utilize a small amount of power to control a larger source of power connected to electrical devices such as car motors, computers, and lighting installations. A basic relay switch consists of a control circuit with an electromagnetic coil and a load circuit with contacts and a lever. When current flows into the relay switch, it moves through the coil, creating a magnetic field that causes the lever in the load circuit to move between contacts, either turning the device on or off.

In a normally open (NO) relay switch, the load circuit is closed, and the power source connected to the relay is turned on when power is supplied to the relay. Conversely, in a normally closed (NC) relay switch, the load circuit is open, and the power source connected to the relay is turned off when power is supplied to the relay. Other types of relay switches may utilize non-moving parts, such as transistors or semiconductors, as the control circuit to operate the switching mechanism.

Relay switches can be controlled with an external switch, like a light switch, or they can be connected to an automatically switched power source, such as a car ignition. One relay can operate multiple switches, and multiple relays can be operated with a single switch, with each relay operating independently from the other relays in the system.

Supco, a company founded in 1945 and headquartered in Allenwood, NJ, manufactures test instruments and replacement parts for heating, ventilation, air conditioning, and refrigeration systems.

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